| Formula = C
| MolarMass = 212.20 g/mol
| Appearance = White crystalline powder
| Density =
| MeltingPtC = 150
| BoilingPt = Decomposes
| Solubility =
| MainHazards =
| FlashPt =
| AutoignitionPt =
, or propyl 3,4,5-trihydroxybenzoate is an ester
formed by the condensation
of gallic acid
. Since 1948, this antioxidant
has been added to foods containing oils and fats to prevent oxidation
. As a food additive, it is used under the E number E310
Propyl gallate is an antioxidant. It protects against oxidation by hydrogen peroxide and oxygen free radicals.
Propyl gallate is used to protect oils and fats in products from oxidation; it is used in foods, cosmetics, hair products, adhesives, and lubricants.
It is used as a triplet state quencher
and an antioxidant in fluorescence microscopy
A 1993 study in rodents found little or no effect on carcinogenesis by propyl gallate.Hirose, Masao, et al
. "Modification of carcinogenesis by α-tocopherol, t-butylhydro-quinone, propyl gallate and butylated hydroxytoluene in a rat multi-organ carcinogenesis model." Carcinogenesis
14.11 (1993): 2359-2364.
A 2009 study found that propyl gallate acts as an estrogen antagonist